Cylinder lock



June 19, 1928. 1,674,514

E. N. JACOB] CYLINDER LOCK Filed June v, 1926 WITNESSES.

M g. ATTORNEY? Patented June 19 1928.

EDWARD N.

JAooBI; on MILWAUKEE. WISQONSIN; ASSIGNOR ronnrees & s'rnn'rron J CYLINDER nocK.

Application filed nine 7, 192a. seriai.1i 'i14,2o5.

This invention has forits object to provide a driving stem for Connecting'the lock cylinder with the part tobe driven thereby,

such stem having universal connection with the lock cylinder to permitit to assume an angular position with respect to the lock.

An object of the invention is to produce such universal joint connection by simple and inexpensive means within the lock-case, insuring against the disconnection of parts and making the structure strong and durable for the intended purposes." I I Another object of the invention is to spe cifically improve upon the constructioncovered'in my pendingapplication for locks, Serial No. 71,350. Y

With the above and other objects in view the invention consists in the cylinder look as herein claimed and all equivalents.

Referring to the accompanying drawings in which like characters of reference indicate the same parts in different views,

Fig. 1 is a longitudinal sectional view of a cylinder lock exemplifying this invention;

Fig. 2 is a rear view thereof;

Fig. 3 is a transverse sectional view on the plane of line 33 of Fig. 1, and

Fig. 4 is a similar view on the plane of line M of Fig. 1. v

In these drawings, indicates a lockcase having a recess or cylindrical pocket entering it from its front end, in which is fitted a lock cylinder 11 to be turned by means of a key fitting in a key slot 12 thereof. Diametrically opposite grooves 13 in the inner walls of the lock-case receive the tumbler slides 14 of the lock cylinder to prevent the latter from turning, such tumblers being controlled by the key in the usual manner. A thin sheet metal shell 15 fits over the flanged front end of the lock-case and against a reduced shoulder of the cylinder 11 to confine it. I

The grooves 13 do not extend to the full depth of the pocket, and the inner end of the lock cylinder is provided with asquare socket '16 to loosely receive the end of the square stem 17 for turning it. The stem is held within the driving socket of the lock cylinder by a slotted washer 18 keyed thereon by having the parallel edges of its slot fitting within slots 19 cut through diagonally opposite edges of the stem a short distance from its end which form a reduced neck por- UITIEDI PATENT OF'FICE .1

tion The stem passes through a flaring opening 20 in the end of the lock-case andthe washer viscountersunk within a bearing seat formed for it in the bottom of the pocket and'is held in its seat by the end of the lock cylinder bearing thereon. -Thewasher turns on its seat, moving with the stem asthe latter is turnedby the lock cylinder, but the play of the'washer within the slots 19 of the stem and the freedom of the ,end of the stem within the square socket 16 I permits the stem totake angular positions as shown by dotted linesin Fig.1 to accomniodatev the location of the lock with respect to the part driven thereby without binding and thus constituting in effect a universal oint transmitting the drive throughsuch an,- gular relation.- The lock cylinder may be provided with means for limiting its movement, such as a stop lug 21 on the lockcase 10 near the washer seat to be passed by a groove or rabbet 22 in the end of the lock cylinder andlimiting the turning of the lock cylinder when the ends of said groove 22 engage'therewith.

With this invention the driving stem is retained in its driving connection with the lock cylinder and is rotatably mounted in the lock-case by the washer 18 which constitutes a thrust bearing for the stem freely turning with it and permitting any angular position thereof but limiting its endw'ise m0vement..

,As the lockcase is usually made of die cast metal, the bearing thereagainst formed by the steel bearing washer 18 remaining in its flat surface contact therewith in all angular positions of the stem avoids gouging or cutting the soft metal and thus makes the lock durable.

Obviously the invention is not limited to the details shown as many modifications may be made therein.

What I claim as new and desire to secure by Letters Patent is:

1. A look comprising a lock-case, a cylinder mounted therein, a driving stem entering the lock-case and having loose driving connection with the cylinder, and a washer mounted on the driving stem and confined within the lock-case to hold'the stem in its driving connection with the cylinder, said washer being loose on the driving stem to permit of angular positions thereof with respect to the'cylinder.

2. In a look, a lock-case, a lock cylinder turning" therein, a driving stem entering the lock-case and having driving connection with the lock cylinder, said driving stem having a contracted neck portion, and a bearing washer fitting thereon and confined within the loclncase but having a loose fit on the driving stem to permit of angular positions thereof with respectto the lock cylinder.

3. In a look, a lock-case, a lock cylinder turning therein, a driving stem entering the lock-case through an opening at the end thereof and having driving connection with the cylinder, said driving stein having a re? duced. neck portion, and a bearing washer fitting on the reduced neck portion of the driving stem and having a bearing seat within the lock-case at the end of said opening, there being play between the driving permit of angular stem and the Washer to positions of the driving stem.

4. In a lock, it lock-case, a lock cylinder turning therein, there being an opening in the end of the lock-case, a square driving stem passing through said opening and hav-' ing opposite slots therein, and a washer having a slot to loosely fit Within the slots of the driving stem and seated within the lock-case, there being a socket in the end of the lock cylinder having a loose driving fitwith the. end of. the driving Stein, the play of said driving, stem within the washer and the lock cylinder permitting it to take angular positions With respect to the lock cylinder. r

5. In alock, a lock-case, a lock cylinder turning therein, a driving stem entering the leek-case and having a driving connection with the lock cylinder, said driving stein having opposite slots, and a slotted washer loosely fitting in the slots of the loose to permit of angular positions of the driving stem with respect to the lock cylinderi 1 In testimony whereof, I affix my signature. I,

EDWARD- n. JAQQBI. 

